(19)
(11) EP 0 729 009 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.03.1998 Bulletin 1998/11

(43) Date of publication A2:
28.08.1996 Bulletin 1996/35

(21) Application number: 96102536.8

(22) Date of filing: 20.02.1996
(51) International Patent Classification (IPC)6: G01C 19/56
(84) Designated Contracting States:
DE FR GB

(30) Priority: 21.02.1995 JP 56690/95

(71) Applicant: WACOH CORPORATION
Saitama 362 (JP)

(72) Inventor:
  • Okada, Kazuhiro
    Ageo-shi, Saitama 362 (JP)

(74) Representative: Klunker . Schmitt-Nilson . Hirsch 
Winzererstrasse 106
80797 München
80797 München (DE)

   


(54) Angular velocity sensor


(57) An angular velocity sensor for detecting angular velocity components about three axes with high response is provided. A weight body (40) carries out a circular movement along a circular orbit (41) within the XY-plane with the origin O being as a center. The weight body (40) is supported so that it can be moved with a predetermined degree of freedom within a sensor casing. A Coriolis force Fco exerted in the Z-axis direction to the weight body (40) is detected when the weight body (40) passes through the X-axis at the point Px and an angular velocity ωx about the X-axis is obtained based on the detected force. Further, a Coriolis force Fco exerted in the Z-axis direction to the weight body (40) is detected when the weight body (40) passes through the Y-axis at the point Py and an angular velocity ωy about the Y-axis is obtained based on the detected force. In addition, a force exerted in the X-axis direction to the weight body (40) at the point Px is detected and an angular velocity ωz about the Z-axis is obtained based on the detected force by eliminating a centrifugal force.






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